Question

A man fires a pistol and 4 seconds later hears the echo of the short from a cliff ace. Select from the following the best approximation of the distance of the man from the cliff face if we assume that the speed of sound in air is about 330 metre per second A C E 100 metre 600 metro 2500 metre B. D 300 metre 1200) metro
​

Answer 1

Answer:

if the sound hear by man then the sound return back after collide with the cliff so, time for echo= 2* distance between the man and cliff÷ velocity of sound.